Merge pull request #200052 from SuperSandro2000/less-space

        type = types.nullOr types.str;

        default = null;

        description = lib.mdDoc ''

          When less closes a file opened in such a way, it will call another program, called the input postprocessor, which may  perform  any  desired  clean-up  action (such  as deleting the replacement file created by LESSOPEN).

          When less closes a file opened in such a way, it will call another program, called the input postprocessor,

          which may perform any desired clean-up action (such as deleting the replacement file created by LESSOPEN).

        '';

      };

    };